What's the bibliographstyle of this Bibliography?

Question

Is there an appropriate style file for this kind of Bibliography?

Answer 1

The shown snippet is by far not enough to build a complete biblatex style. Too many details are missing, in particular the very important formatting of @article entries.

Using biblatex-ext (for pubinstorg+location+date) you can build something like

\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[style=ext-numeric, backend=biber]{biblatex}

\DeclareFieldFormat{title}{\mkbibbold{\mkbibemph{#1}}}

\renewbibmacro*{pubinstorg+location+date}[1]{%
  \printlist{#1}%
  \setunit*{\publocdelim}%
  \printlist{location}%
  \setunit*{\locdatedelim}%
  \usebibmacro{date}%
  \newunit}

\addbibresource{biblatex-examples.bib}

\begin{document}
\cite{nussbaum,cicero,worman,companion}
\printbibliography
\end{document}

More general hints to get started can be found in Guidelines for customizing biblatex styles. If you have more questions, I strongly suggest to isolate concrete questions like 'How can I get the title of books in bold italics?' or 'How can I change the order of "location: publisher, date" to "publisher, location, date"' and include an example document (a so-called MWE I've just been asked to write a minimal example, what is that?, How to write a MWEB (Minimal working example with Bibliography)?) of what you have so far.